1. Open devtools for any web page
2. Switch to Performance panel
3. Click the gear icon on the right of the tool bar
4. Check "Enable advanced paint instrumentation (slow)"
5. Click record icon
6. resize the window etc. to make some frames
7. Stop recording
8. Expand "Frames"
9. Click above the frame thumbnail
10. Choose the Layers panel below the captured result
Expected: The Layers panel shows layer tree.
Actual: "Layer information is not yet available"
[139847:139847:0110/110813.923075:INFO:CONSOLE(31)] "Uncaught (in promise) TypeError: Cannot read property '0' of undefined", source: http://127.0.0.1:43437/devtools/timeline_model/timeline_model_module.js (31)
It's a recent regression: https://chromium.googlesource.com/chromium/src/+log/15f20f48842d18ebd868891cd44a7a7e34864713..2a8d0d3bf84178c0f127ab957c8395c7a32776a9
Comment 1 by wangxianzhu@chromium.org
, Jan 10Owner: wangxianzhu@chromium.org